DE2962590D1 - Process for increasing the life of basic converter linings in the course of the refining of pig iron to steel - Google Patents

Process for increasing the life of basic converter linings in the course of the refining of pig iron to steel

Info

Publication number
DE2962590D1
DE2962590D1 DE7979104513T DE2962590T DE2962590D1 DE 2962590 D1 DE2962590 D1 DE 2962590D1 DE 7979104513 T DE7979104513 T DE 7979104513T DE 2962590 T DE2962590 T DE 2962590T DE 2962590 D1 DE2962590 D1 DE 2962590D1
Authority
DE
Germany
Prior art keywords
mgo
refining
cao
pig iron
steel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE7979104513T
Other languages
German (de)
Inventor
Gustav Dr Mahn
Dieter Nolle
Josef Dr Schoop
Karl-Heinz Prof Dr Obst
Wolfgang Dr Munchberg
Manfred Dr Rahder
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SALZGITTER PEINE STAHLWERKE
Dolomitwerke GmbH
Original Assignee
SALZGITTER PEINE STAHLWERKE
Dolomitwerke GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6056185&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE2962590(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SALZGITTER PEINE STAHLWERKE, Dolomitwerke GmbH filed Critical SALZGITTER PEINE STAHLWERKE
Priority to DE7979104513T priority Critical patent/DE2962590D1/en
Application granted granted Critical
Publication of DE2962590D1 publication Critical patent/DE2962590D1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/44—Refractory linings

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Abstract

1. A method of increasing the service life of basic linings of converters in the refining of pig iron into steel using MgO or substances containing MgO and lime as additives, additives of this type being injected into the focus region, characterised in that the MgO or the substances containing MgO are injected into the liquid pig iron in the presence of CaO or basic substances containing CaO with the proviso that injection begins with the refining process is terminated after 15 to 35% of the refining time, the additives in question having a particle size of less than 2 mm and the quantities of MgO and CaO having to be measured in such a way that a percentage CaO/MgO ratio and a percentage CaO/SiO2 ratio are obtained in the slag which, as shown in diagram 1, belong functionally together and lie between curves A and B, whilst the remainder of the lime required is added beginning after 15% to 35% of the refining time.
DE7979104513T 1978-12-02 1979-11-15 Process for increasing the life of basic converter linings in the course of the refining of pig iron to steel Expired DE2962590D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE7979104513T DE2962590D1 (en) 1978-12-02 1979-11-15 Process for increasing the life of basic converter linings in the course of the refining of pig iron to steel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2852248A DE2852248C3 (en) 1978-12-02 1978-12-02 Process for increasing the durability of basic converter linings when refining pig iron
DE7979104513T DE2962590D1 (en) 1978-12-02 1979-11-15 Process for increasing the life of basic converter linings in the course of the refining of pig iron to steel

Publications (1)

Publication Number Publication Date
DE2962590D1 true DE2962590D1 (en) 1982-06-03

Family

ID=6056185

Family Applications (2)

Application Number Title Priority Date Filing Date
DE2852248A Expired DE2852248C3 (en) 1978-12-02 1978-12-02 Process for increasing the durability of basic converter linings when refining pig iron
DE7979104513T Expired DE2962590D1 (en) 1978-12-02 1979-11-15 Process for increasing the life of basic converter linings in the course of the refining of pig iron to steel

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE2852248A Expired DE2852248C3 (en) 1978-12-02 1978-12-02 Process for increasing the durability of basic converter linings when refining pig iron

Country Status (3)

Country Link
EP (1) EP0011779B1 (en)
AT (1) ATE884T1 (en)
DE (2) DE2852248C3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3040630C2 (en) * 1980-10-29 1983-03-31 Stahlwerke Peine-Salzgitter Ag, 3150 Peine Process for the production of steel in the basic converter using liquid converter slag
DD300677A7 (en) * 1989-06-20 1992-07-02 Eko Stahl Ag,De METHOD FOR INCREASING THE DURABILITY OF FIRE-RESISTANT CLADDING OF METALLURGICAL GEFAESSEN
AT394055B (en) * 1990-04-12 1992-01-27 Veitscher Magnesitwerke Ag METALLURGICAL VESSEL AND METHOD FOR PRODUCING THE FIREPROOF LINING OF SUCH VESSELS
US5340088A (en) * 1990-04-12 1994-08-23 Veitscher Magnesitwerke-Actien-Gesellschaft Metallurgical vessel and method of making the refractory lining of such vessels
AT394054B (en) * 1990-04-12 1992-01-27 Veitscher Magnesitwerke Ag METALLURGICAL TUBE, METHOD AND DEVICE FOR PRODUCING THE LINING THEREOF
RU2545874C2 (en) * 2012-04-27 2015-04-10 Закрытое Акционерное Общество "МагнийПром" Method of magnesian flux for steel production

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3288592A (en) * 1963-01-16 1966-11-29 Pfizer & Co C Process for reducing deterioration in equipment handling molten materials
FR1346148A (en) * 1963-01-31 1963-12-13 Centre Nat Rech Metall Process for the protection of the interior lining of metallurgical furnaces
FR1536457A (en) * 1967-07-07 1968-08-16 Siderurgie Fse Inst Rech Process for the protection of refractory linings of continuous refining metallurgical vessels
BR7302595D0 (en) * 1972-05-09 1974-06-27 Blanq Cazaux Morales A PROCESSING PROCESSES FOR IRON MANUFACTURING AND PROCESSING PROCESSES FOR IRON MANUFACTURE AND STEELS
JPS5362707A (en) * 1976-11-17 1978-06-05 Kyoei Steel Ltd Electric furnace steel making method
LU77946A1 (en) * 1977-08-09 1979-05-23 Icm Holding Sa PROCESS FOR PROTECTING THE REFRACTORY COATINGS OF CAST IRON MIXERS

Also Published As

Publication number Publication date
ATE884T1 (en) 1982-05-15
DE2852248B2 (en) 1981-06-04
EP0011779B1 (en) 1982-04-21
DE2852248A1 (en) 1980-06-04
DE2852248C3 (en) 1982-02-11
EP0011779A1 (en) 1980-06-11

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee